package javawdw.security;

import java.util.Collection;
import java.util.Iterator;

import org.apache.log4j.Logger;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.access.ConfigAttribute;
import org.springframework.security.access.SecurityConfig;
import org.springframework.security.authentication.InsufficientAuthenticationException;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;

public class AccessManager implements
		org.springframework.security.access.AccessDecisionManager {
	private static final Logger logger = Logger
			.getLogger(AccessManager.class);

	public void decide(Authentication authentication, Object object,
			Collection<ConfigAttribute> configAttributes)
			throws AccessDeniedException, InsufficientAuthenticationException {
		if (logger.isDebugEnabled()) {
			logger.debug("正在访问的url是：" + object.toString());
		}
		Iterator<ConfigAttribute> ite = configAttributes.iterator();
		while (ite.hasNext()) {
			ConfigAttribute ca = ite.next();
			String needRole = ((SecurityConfig) ca).getAttribute();
			for (GrantedAuthority ga : authentication.getAuthorities()) {
				if (needRole.equals(ga.getAuthority())) {
					return;
				}
			}
		}
		throw new AccessDeniedException("没有权限");
	}

	public boolean supports(ConfigAttribute attribute) {
		return true;
	}

	public boolean supports(Class<?> clazz) {
		return true;
	}
}